http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113917000-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_10c3159e721edee003a4ba2b207f75dc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-02 |
| filingDate | 2021-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_399b0584a9e71ec7a670946e9187fe63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc9db9eff4afa60b313af4c51610462b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b86a043415db37d9de0196259f21aecb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecba77741954247dfc9b01d4a39b5159 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f89e18e89f045a2dcbc2db57e3b6a5e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dac357781c4f4a654ff15593c00b1e90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_466093b5c9a758fec27cea4e8150fe22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd6166332c7f8da2a19f9b74f953039d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae0250bff0914e6c2b024fea1612a294 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b7d33422e30a47053ccd2074d6a9aed |
| publicationDate | 2022-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113917000-A |
| titleOfInvention | Quantitative method for the effective components of Ephedra in Qingfei Paidu Granules |
| abstract | The invention relates to the technical field of medicine, and specifically discloses a quantitative method for the effective components of ephedra in Qingfei Paidu Granules. The present invention adopts high-performance liquid chromatography, and the chromatographic conditions include: using polar ether to connect phenyl-bonded silica gel as chromatographic column filler, using acetonitrile as mobile phase A, and using 0.2% phosphoric acid solution (containing 0.2% triethylamine) as Mobile phase B, carry out gradient elution; the gradient elution process is: in 0-20min, the volume ratio of mobile phase A and mobile phase B is 1:99; in 20-20.1min, mobile phase A and mobile phase B The volume ratio is gradually changed from 1:99 to 50:50 at a constant speed; in 20.1-25min, the volume ratio of mobile phase A and mobile phase B is 50:50; the measured active ingredients of ephedra are ephedrine hydrochloride and pseudoephedrine hydrochloride. The method provided by the invention has good repeatability and high precision, and there is no significant difference in the measurement results on different high performance liquid chromatographs and different chromatographic columns, indicating that the method of the invention has good applicability and reproducibility, and is suitable for General promotion. |
| priorityDate | 2021-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.